Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
19007excellentexcellent11excellent
18006excellentexcellent11excellent
17006excellentexcellent11excellent
16006excellentexcellent11excellent
15005excellentexcellent11excellent
140029goodexcellent11excellent
13008excellentexcellent21excellent
120010excellentexcellent21excellent
11008excellentexcellent11excellent
10006excellentexcellent11excellent
090021goodexcellent41excellent
080019goodexcellent31excellent
070019goodexcellent41excellent
060020goodexcellent31excellent
050016goodexcellent31excellent
040017goodexcellent41excellent
030025goodexcellent51excellent
020018goodexcellent41excellent
010012excellentexcellent21excellent
000012excellentexcellent31excellent
230013goodexcellent31excellent
220015goodexcellent31excellent
21008excellentexcellent21excellent
20009excellentexcellent21excellent